SIIG's CyberSerial 4S 950 PCI is an excellent solution designed to add four additional 9-pin RS232 serial ports for connecting multiple serial-based devices to your PCI-enabled desktop computer. This 4-port serial adapter card comes with four high-speed 16950 UART serial ports supporting data transfer rate of up to 920Kb/s. The serial ports can work as either standard RS232 ports, or can be independently configured as 5V /12V power outputs for devices that require power such as handheld scanners, table scanners, and POS displays. The CyberSerial 4S 950 PCI features IRQ sharing to reduce IRQ conflicts, built-in 128-byte FIFO buffers to dramatically increase data transmit/receive speed especially under Windows multitasking environment, PME (Power Management Event) that allows device to request a change in system power state (wake up system), and Universal PCI card support to work with 32-/64-bit, 3.3v/5v PCI and PCI-X slot.